Buffer Solution usually containing a weak acid and its conjugate weak base, or a salt, of such a composition that the pH is held constant within a certain range.
通常指含有一种微酸和与之结合的一种微碱或盐，并能维持酸碱值基本恒定的溶液。
At last, compared with anti-S transform control, the inverse control has a better effect on the process changing from strong acid to weak acid or from strong base to weak base.
最后比较了逆模型控制和反s变换控制，逆模型控制有更好的效果，可以很好控制酸性到弱酸和碱性到弱碱的情况。
The urea-formaldehyde resin is formed by the reaction of urea, formaldehyde, aldehyde, one or more stabilizers and modifier according to the route of weak base-weak acid-weak base.
脲醛树脂 由尿素、甲醛、二醛和一种或多种稳定剂、改性剂，按照弱碱-弱酸-弱碱 的路线反应而得。
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